2(44) security officer, grade C

means an employee who performs any one or more of the following duties:

a)       supervising or controlling security officers, grades D or E;

b)       driving a motor vehicle in the course of supervising or controlling security officers grade D or E;

c)       driving a motor vehicle for the purpose of transporting security officers; and

d)       who may be called upon to perform any or all of the duties of a security officer, grade D.